I don't want to release a new version with just that change. But you can apply this changes modifying wp-carousel.php.
Near line 221 you'll find:
wp_register_script('wp_carousel_jcarousel', $wp_carousel_path[6].'js/jcarousel.min.js', array('jquery'), false, true); // jCarusel (tomado de http://sorgalla.com/jcarousel/)
wp_register_script('wp_carousel_nivoslider', $wp_carousel_path[6].'js/jquery.nivo.slider.js', array('jquery'), false, true); // NivoSlider, el script printipal para crear los carruseles (tomado de http://nivo.dev7studios.com/)
Replace it with:
wp_register_script('wp_carousel_jcarousel', $wp_carousel_path[6].'js/jcarousel.min.js', array('jquery'), false, false); // jCarusel (tomado de http://sorgalla.com/jcarousel/)
wp_register_script('wp_carousel_nivoslider', $wp_carousel_path[6].'js/jquery.nivo.slider.js', array('jquery'), false, false); // NivoSlider, el script printipal para crear los carruseles (tomado de http://nivo.dev7studios.com/)
Then javascript code will be loaded in the header instead of in the footer, and the carousel should load almost instantly.